I have but four words.... THANK YOU, MR. BORLA!!!!!!!

Of course, that would make for a boring review so I'll add more.

First... Yes, I do have before and after dyno graphs and will post them in a moment. However, I first want to go over the specifics. No excuses... no stories... just the facts.

• First set of dynos (runs 1-3) were done a few months ago with no mods. Straight factory 350Z with a few thousand miles on the odometer
• Second set of dynos (runs 4-6) were done today with Borla True Dual exhaust
• The only other mod on my car is 20% window tint... and if it's making the horsepower gains listed below, I'm going even darker!
• I ran the stock 18" non-Rays wheels for both sets of runs
• Temperature first time was 60 degrees; today 91 degrees. But, the measures were done as SAE and should be corrected for temp, altitude, etc. Even so, if you want to argue temperature difference, it was hotter today so the temperature should work hp gains even further in my favor.
• Both sets of runs were done at the exact same shop, on the exact same dynojet, by the exact same technician.
• ECU was reset prior to second set of runs. This was done by unhooking battery for 24+ hours prior to driving to the dyno shop today.
• for emphasis: THE ONLY PERFORMANCE MOD MY CAR HAS IS THE BORLA EXHAUST! Everything else is strictly factory.
• Pulls were done in 5th gear

Okay, with the preliminaries stated, I will post graphs in the next two messages. These are the first run and the last run for each day. I apologize for the size of the graphs. They are not hosted so I'm constricted by the 640x480 rule. I can email them to anyone who wants to see them. Am not posting second run... basically, in both cases, the second run is about half way between runs 1 and 2.

On to the show...

 

Here is the graph for the first run from both days.

As you can see, I must have gotten the runt of the litter because my first pull with no mods came in at an anemic 216.1 hp. Torque at 215.7 ft/lbs. Needless to say, I was disappointed, but its only a reference point, right? I am still outrunning stock GTs with those figures!!!

With the Borla exhaust, my car made 235.6hp and 230.2 ft/lbs of torque on run one.

For those without calculators handy, thats...
+ 19.5 rwhp
And
+ 14.5 ft/lbs

WOW!!! That's more than I could have hoped for. And if you check the graph.. the torque pretty well continues to increase over stock (wider gap between two lines) as the rpms rise. HP difference is pretty consistent across all RPM ranges.

Will this trend continue with the other runs????

 

It's all good! On the final runs each day, the numbers increased nicely.

When I first visited the shop, my last run & my best run netted me 226.6 rwhp and 221.6 ft/lbs of torque. Just a little shy of what others have averaged here.

Today, the last run clocked in at 244.5 rwhp and 236.8 ft/lbs of torque. again for those without abacuses, that's...

+17.9 rwhp
And
+15.2 ft/lbs

Pretty consistent if you ask me!

I couldn't be happier! The gains are on par with Borla's claims (at least on my car) and the sound if phenomenal. And people aren't kidding, it gets to sound even better as you put some miles on. I have about 300 miles on my Borla and it definitely has a better sound than the first day I had it on.

There you have it... now go out and buy your Borlas!!!!

 

WOW!!! Good going. So does this mean that the ECU IS compensating for the exhaust??? Man now I'm really confused. In any case...looks like the Borla is a winner. I only have one question, how many miles did you have on 1/10 and how many today(6/24)? Thanks again for the dynos. Now I'm more of a believer.

 

I don't know the exact odometer readings, but I'd guestimate about 3000 miles and one Nissan service between dynos. The car was already well-broken in the first time I went for dyno runs.

 

I was going to stay of out this but after the seeing the results, they are invalid as the dynos were done 6 months apart and the baseline is too low.

Comparison dyno's need to be done same day, same procedure, same everything except the part.

Phillip
Injen Technology

 

Spoken like a true mouthpiece for Injen.

The whole point of SAE standard is so you don't have dyno on the same day. It compensates for temperature, barometric pressure, altitude, etc. If it was measured as STD, I would agree, but it's SAE. All conditions are normalized.

The only real variable is the change in mileage, but I drive my car regularly and know the power has been pretty consistent the entire time I've had it. As soon as I put the Borla on, I could feel more power... at least I thought I did. Today's tests confirm what my inaccurate butt-dyno was telling me.

 

Hey Phillip,
How many HP does the Injen exhaust make BTW??

 

BTW... baseline figure is pretty irrelevant. Dynos are not good ways to measure true rwhp.

What they are good for is measuring net gains and losses as long as you use the same dyno before and after... and I did.

 

McDuck- Congrats- you have an auto right?

 

Nope... mine's a Performance 6-spd... like I said, I must have gotten the runt... but I still luv her!

 

I almost believe those #". I felt like my #"s were getting better when we stopped doing pulls with dyno.

 

Well, I have to go entertain junior for a while, but I'll come back in a bit to see if there is further commentary.

See... he's just waiting to go for a ride!

 

Baselines are relevent if you would like an accurate comparison. Even though it may be SAE corrected, the time frame is still 6 months apart and there are a lot of factors that come into play. If you did a baseline on the same day, I would not even be writing in this thread.

I'm not here to fight against Borla as I'm sure they make a good product. I'm just saying the results are invalid and would be considered invalid by many other companies and magazines.

 

Thanks for the proof, dude, er mcduck

 

"Only time will tell".... Is just a matter of time like I said... nice #'s.
I believe that the Base Dyno is good no matter is 6 months old!!!

P.S. the firts dyno was at 60 degree and now are in 90 degree...that is a big factor, so you may expect better #'s if the temp. was in 60 degree's (in here is always in 90 degree's)

 

Hey Phillip,
your first statement was best. Stay out of it.
btw - I do have your intake

Thanks for the info mcduck!

 

Yea...I'm going to stay out of this now. I said my part.

Have fun guys.

Phillip
Injen Technology

 

The true duel BROLA is without a doubt the best system out there presently, I've had nine on for almost a week now, the fit and finish quality is superb, it takes a few hundred miles and a few days for it to actually break-in the sound definitely changes for the better. quiet when you want it to be and will growl on command . for the price it's a steel , stainless steel.

 

What part of same shop, same dyno, same technician, same car did you misread? Again, the point of SAE correction is to make up for environmental variables over different visits... otherwise everyone could just use STD and it would be fine.

The only thing that changed is that my odometer went from reading 6XXX miles to 9XXX miles. So, I guess your saying that driving 3000 miles gave my 1/2 of my hp gains? By that line of thought, another 15,000 miles and my car will be dynoing 300rwhp with no futher mods.

Actually, no... for the same reason the 6 months is irrelevant, the temperature should be irrelevant. SAE should correct for this. Though if someone wants to disagree, I'm willing to compromise and say the time length and temperature variance probably offset.

Phillip, I'm not trying to knock the performance gains of the Injen system... this post was just to show what my car really gained with the Borla. If you want to ship me an Injen to test on my car. I'd be happy to swap them out, dyno, then send you back the Injen when I'm done.

And I will send it back 'cause it doesn't matter to me if the Injen exhaust makes twice the power of the Borla... IMO it doesn't sound as good and what's up with the pipes coming out at angles. That looks goofy!